
#app{
    width: 100%;
    height: 100%;
    overflow: auto;
    overflow-x: hidden;
    position: relative;
    // background: url(../image/bj2.png) no-repeat 0 0;
    // background-size: 100% ;
    .beijing{
        width: 100%;
        // margin-left: -8px;
    }
    .btn-box{
        position: absolute;
        width: 400px;
        height:270px;
        top: 2280px;
        left:calc((100% - 400px) / 2);
        z-index: 2;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        .btn{
            height: 120px;
        }
    }
}